Andrew jackson



A. J. MARSHALL.

PLOW.

APFLICATlON FILED MAY 29. |918.

Patented J une 24, 1919.

QN. 0 O O O VA R Q\ O m V Q\ l II\\\N w. #ou 0 k O O O Y n. N@ o o@ MIM N\ Y .W\ MV N O Q nisrrnn sTATEs PATENT Acruise.

ANDREW JACKSON MARSHALL, OF RICHMOND, TEXAS.

PLOW.

T 0 all whom, it may concern A Be 1t known that I, ANDREW JACKSON MARSHALL, a citizen of the United States, re-

siding at Richmond, in the county of vFort Bend and State of Texas, have invented certain new and useful Improvements in Plows, of which the following is a specification.

This invention relates to improvements in plows and it is the principal object of the invention to provide a plow capable of being adjusted to cause engagement thereof with the earth at varying depths such as may be desired, thus, rendering the same useful in the ordinary surface cultivation of earth and in the sub-soiling of the same.

Another and equally important object of the invention is to provide a novel form of support for the earth working element whereby the angular positioning thereof can be readily changed.

The foregoing together with additional advantageous details and arrangements of parts of the preferred embodiment of my invention will be clear from the specific description hereinafter contained, when read in connection with the accompanying drawings forming part hereof, wherein said embodiment of the invention is illustrated for the purpose of facilitating a full understanding of the present improvements.,

In the drawings:

Figure 1 is a side elevation of the improved plow having parts thereof broken away, and

Fig. 2 is a vertical transverse section therethrough.

Having more particular reference to the drawings, in connection with which like reference characters will designate corresponding parts throughout the several views, 1 represents the beam of the improved plow and 2 the handle members thereof, said handle members of course being secured to the intermediate portion of the beam by a bolt or like fastening device indicated at 3. A clevis or other form of draft connection 4 is secured to the forward end of the beam 1 and serves for an obvious purpose. As will be noted, the rear portion of the plow beam 1 is curved upon itself as at 5 whereby to receive a standard 7 having rollers 8 j ournaled in the upper and lower ends thereof and adapted for engagement with the curved surfaces of the portions 5 of the beam. The lower end of the standard is curved upon itself as at 9 in order that a suitable form of earth working element 10can be secured thereto and is apertured to permit the pivoting ofa connecting shoe 11 thereto, while the upper end of the standard is apertured and is pivotally engaged by one end of a connecting rod V12, having a plurality lof openings therein, this connecting rod eX- tending into pivotal engagement with an adjusting lever 13 mounted on a toothed segment 14 secured to the rear portion of the beam 1 in a suitable manner and carrying the usual spring pressed slidable locking pawl 15 whereby the same can be locked in adjusted positions. In this connection, it is to be noted that the handle portion ofA the lever 13 is arranged at a point convenient to an operator and consequently, adjustment of the same can be quite readily eected.

A bracket arm -17 is secured to the rear end of the beam 1 and extends therefrom and serves to pivotally support the upper end of a bar 18 which as will be noted is formed with a series of openings 19, while the lower end thereof is pivotally connected at 20 to the adjacent end of the connecting rod 11.

A bracing arm 21 is provided and has one portion thereof secured to the under side of the rear end of the beam 1 while the lower end thereof is engaged with the curved portion 9 of the handle arm 6.

In using my improved plow, to adjust the earth working element 10, it is only necessary to lock the adjusting lever 13 over the segment 14, such movement, obviously moving the upper end of the standard 6, which by reason of its slidable or movable connection with the curved portion 5 of the plow beam will cause the proper adjustment of the earth `working element, it of course being borne in mind that the lower end of the standard is pivotally connected to the shoe 11 which is in turn engaged with the bar 18. Obviously, in this way, the earth working element 10 can be adjusted to different angular positions for the ordinary surface cultivation of soil or for sub-soiling operations, such as conditions or preference may dictate. Should it be desired, the bar 1S can be adjusted with relation to the bracket arm 17 to cause the arrangement of the earth working element 10 at greater or less acute angles.

Manifestly, the construction shown is capable of considerable modifica-tion and such modification as is within the scope of Specification of Letters Patent. Patented June 24,1919,

Application filed May 29, 1918. Serial No. 237,283.

my claim, I consider within the Spirit of my invention.

I claim:

In a plow, a beam having one portion thereof formed to provide a curved bearing surface, a Standard having one portion thereof engaged about the beam adjacent said bearing surface, rollers carried by the standard engageable with the curved upper and lower surfaces of the curved portion of the standard, a bracing arm fiXedly secured at one end to one end of the beam and pivoted at its remaining end to the lower portion of operating lever mounted'on the upper portion of said beam at its rear end, and means for effecting connection between said operating lever and the upper end of said standard.

In testimony whereof, I afliX my signature hereto.

ANDREW JACKSON MARSHALL.

Copies of this patent may be obtained for ve cents each, by addressing the Commissioner of Patents, Washington, D. c. 

